30184225821 has 24 divisors (see below), whose sum is σ = 44062046496. Its totient is φ = 19909586400.

The previous prime is 30184225801. The next prime is 30184225823. The reversal of 30184225821 is 12852248103.

It is a happy number.

30184225821 is a `hidden beast` number, since 30 + 1 + 8 + 42 + 2 + 582 + 1 = 666.

It is not a de Polignac number, because 30184225821 - 2¹⁹ = 30183701533 is a prime.

It is a super-2 number, since 2×30184225821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30184225823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1373506 + ... + 1395308.

It is an arithmetic number, because the mean of its divisors is an integer number (1835918604).

Almost surely, 2^30184225821 is an apocalyptic number.

It is an amenable number.

30184225821 is a deficient number, since it is larger than the sum of its proper divisors (13877820675).

30184225821 is a wasteful number, since it uses less digits than its factorization.

30184225821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23433 (or 23430 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 30184225821 in words is "thirty billion, one hundred eighty-four million, two hundred twenty-five thousand, eight hundred twenty-one".